Elevator-hatch way



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' J N. BEGKWITH.

' ELEVATOR HAT GGGG Y.

No 413.643.- Patented Oct. 29, 1889. v

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N. BECK-WITH.- ELEVATOR HATGHWAY.

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(No Model.)

(I No 413,643. Patented Oct. 29-, 1889.

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WITNEEEIEEE j QU ITED STATES 1PATENT-OFFICE;

'NELSON BEGKWITH, OF CAMBRIDGE, MASSACHUSETTS.

ETLEVA'AI'OR-HATCHWAY."

SPECIFICATION forming part of Letters Patent No. 413,643, dated October 29, 1889. Application filed Ju1y5, 1888. Serial No. 278,995. (No model.)

and useful Improvement in Elevators, which will, in connection with the accompanying drawings, be hereinafter fully described,and

specifically defined in the appended'claims.

In said drawings, Figure 1 is a sectional elevation, the section being taken as on line Z Z, Fig. 2, and the View as from the near or bottom end of the sheet, and as if standing in the elevator-well and looking toward the doorway and the closed doors, which latter are arranged at the outerface of the wall of the well. Fig. 2 is a sectional plan view, the section being horizontal and taken as on line X X, Fig. 1, and the view being as from above that line. Fig. 8 is an under side or inverted plan view of the elevator, the walls of the well being shown in horizontal section. Fig. 4 isa sectional elevation, the section being vertical and taken as on line W W, Fig. 2, and the elevation as looking to the right. Fig. 5 is an external elevation of the doors and other parts, such view being from a diametrically-opposite point of View from Fig. 1. Fig. 6

' is an enlarged vertical section through one of the catch-blocks, showing the catch-piece and cushioning-springs in elevation; Fig. 7 is a detached sectional elevation showing one of the studs. by whichthe catch-bars are held out of contact with thecatch-blocks and a device for locking said stud when depressed, so that until it is released it will hold the by the same means... Fig. 9 shows modifications of the catch-blocks.

This invention relates to-that class of elevators shown inUnit'ed States Letters Patent No. 372,107, issued to me October 25, 1887, and

also shown in application No. 263,203, series of 1880, filed by me in United States Patent- Oflice February 7, 1888, to which patent and application reference is to be had; and the invention consists. in features of novelty,

which will next be pointed out, and will be specified in the claims.

Referring again to the drawings, A repre-j sents the wall of the elevator-wel1, and B is the carriage or cage, as it is indifierently termed. Said cage is shown as formed with the bottom a, standards 17, secured therein at the corners, and cross-bars c, secured tosaid standards at the top, said cross-bars being interlocked with and arranged to slide upon the vertical guideways d, and in Fig. 3 a staybar 18 is shown as engaging said ways 01 to steady and guide the bottom of the cage, 'a like bar being so arranged at the diagonallyopposite corner. The doorway O in wall'A is shown as closed by the two parts or leaves D E of the door. Said leaf E is partially counterbalanced by weight h, arranged to move vertically in a guideway, as shown in Figs. 1 and 5. A cord f, attached to a short arm 19, secured to said leaf, passes over sheaves g and sustains the weight, which latter, though aiding in raising leaf E, yet is of such less weight that the leaf moves readily downward to its seat when released by leaf D, as will be explained.

Leaf D at one side, as shown in Figs. 1 and 5,

has projecting from it, near its upper and lower edges, an arm i, in each of which is j ournaled a concave-faced sheave j, which are arranged between and to move on guides is Z,

and when the cord is arranged as shown the on leaf D. This cord passes up over sheave 'n,

supported upon wall A, Figs. 1 and 5. It then passes downward under sheave u, thence upward over sheaf s, and has weight 23 attached to it, said weight not being suflicient to raise leaf D, yet being, with weight h, sufficient to hold both leaves D E in place when they have Upon'the top of cage B is the catch-bar 6,,

arranged to slide lineally incleats 7, and

which is'by arm-springS (when not otherwise controlled) forced into the path of catch-block g, so as to engage in seat w therein; hence when the cage rises said bar 6 will engage in seat w, thereby opening the door, as leaf D will rise coincident with block g by reason of cord m, and when the upper edge of leaf D arrives at arm 19, projecting from leaf E, that leaf will then move with leaf D, the bar 6 being forced out of seat 20 by its engaging the fixed incline or cam .2, which is so positioned that said bar 6 will be disengaged from the seat in block q at the moment when the door is opened, and just before the floor of the cage arrives at the floor of the building; and when the cage again ascends the catch-bar 3,which is arranged beneath the cage to slidein cleats 4 and is forced outward by arm-spring 5, will engage in seat v of block 19, and thereby raise the weight t through cord 0%, thus allowing the door to descend and close the doorway. hen the cage descends, bar 3 again engages the seat in block 19, thus carrying it downward and opening the door, the block q rising coincidently with the door by the action of weight t, and when the cage again descends below the door the bar 6 upon the top of the cage engages block (1, thereby raising weight 15 and allowing the door to close. A double incline or cam 31 is arranged to engage the end of bar 3 and force it out of contact with catch 1; when the cage descends, and a similar cam 00 disconnects said bar 3 from catch '0 when the cage is ascending, each cam being properly positioned to release the bar when the doors have completed the desired movement. By thus employing the pulleys n, u, and s, and carrying cord m from the dooraround said pulleys and attaching weight If to it, and also arranging catch-blocks p q in the cord, the catch-bars (with the co-operation of cord f and weight h) operate the doors entirely through and by means of cord m and hence the doors may be arranged upon the outer side of wall A, regardless of its thickness, without further elongation of the catch-bars 3 6, and by properly arranging pulley n at the inner face of the wall and a similar pulley opposite to it on the outer face of the wall it would be immaterial at what distance apart the cage and doors were arranged.

To prevent shocks, I form the catch-piece 20 of blocks p q separate from the block, as shown in Fig. 6, a projection 21 on said catchpiece extending into the elongated mortise 22 in said block, and coiled springs 23 being arranged on each side of. said projection,while rod 24 passes through the springs, the projection 21, and the block, to which latter it is rigidly secured, and the block is provided with eyes to which the cord is secured; hence whenever the doors are started, through engagement of the catch-bars with the catchpiece, said springs serve to cushion the block and cause the doors to start without shocks.

Said blocks 19 q are formed with a longitudinal groove, and are arranged to slide upon the guides 25, as shown in Fig. 2. I

By means of sheaves j j, attached to leaf D at the side thereof, and the supporting-guides k l, I am enabled to attach. the cord to the door at any point between the right and left hand extremities thereof, or at any point between its upper and lower extremities, as convenience may require, and with the edge that is opposite said pulleys arranged loosely between vertical guides the door Will neither catch nor rattle, but will move noiselessly and freely in its bearings.

In order that the operator may pass the door in any story when going up or down without disturbing such door, I arrange the vertically-sliding stud 17 in the floor of the cage at the corner thereof, as shown in Figs. 1 and 3, and to the top of said stud I secure wire 16, which at its upper end is attached to the arm of bell-crank 15. A wire 14, secured to the opposite end of said crank, extends across the cage, Figs. 1 and 2, and is there secured to the free arm of bell-crank 13, the opposite arm of which engages catch-bar 6, as there shown, and by the operator depressing stud 17 by the action of his foot said bar will be retracted, and hence can, whether going up or down, pass catch to Without engaging it. I also employ the similar stud 12, the lower end of which engages the horizontal arm of bell-crank 11, while wire 10, secured to the opposite arm of said lever, extends across the cage and is attached tothe free arm of bell-crank 9, the other arm of which engages catch-bar 3, so that by depressing stud 12 said bar may be held out of contact with catch 1;, and hence'the cage may pass any door without said bar 3 engaging with said catch and thereby actuating the door. It being obvious that, in going up, if the catchbar 6 be held out of contact with block q, so that the doors are not opened, then bar 3 will, by reason of cam ac, pass block 19 without engaging -it; and when the cage descends, if bar 3 is held out of contact with block 19, so as not to open the door, then bar 6 would not engage block q by reason of cam 2; and hence in either ascending or descending the operator need give heed to but one catch-bar in order to leave the doors undisturbed.

It will be apparent that leaf D may be of a height to close the doorway, in which event leaf E, with its cord f and weight h, would be dispensed with, while all the other devices would perform the functions and accomplish the results herein set out, and that the door may be arranged either at the outer or inner face of wall A, as circumstances may render desirable.

Instead of arranging block 19 in line m between sheaves n u, catch 1) may be arranged upon weight t, with cam m properly arranged beside its path, and with cord at of such length that when door D was opened or closed weight 15 would be in proper position, in which case the operation of the parts would be the same as if block 19 were employed, as in "such case the catch-block at the end of the cord would also serve as the counterpoise.

In Figfithc studs 12and-l7 are shown in position. infloor a, .eachhavinglthe recess .or

seat 27 near the .head, and a guide-bar 26 is shown as secured in the floor, in whichthe studs slidefreely, and when depressed and moved laterally-can be-lockedto thebar,

' as shown in said'Fig. 7. By this means of locking said studs l2 l7, and thereby holding bars 3 6 out of the path ofcatches o w,a person leaving the cage atv either the top or bottom of the well maythus lock the stud that holds back .the oatcl1.-bar.that .Would open the door at the next movement of the elevator, and then a person upon any floor, by lowering the leaf vE by hand and actuating the shipper, can move the elevator to the floor he is upon Without disturbing the door at any other floor;- or, if the cage be stopped upon any floor between the upper and lower one, then by locking both said studs 12 17, as described, a personupon any floor above or be-- low the cage may move it to his own fioor without disturbing thedoor upon any other floor; and as inmany establishments thecage is operated by any one who requires it, instead of by a regular attendant, such means of locking the catch-bars out of the the catch-blocks is highly useful.

As a substitute'fordoor D, so far as relates to a safeguard at the doorway, I show at 30 in Fig. 8 a safety-bar or guard-bar that extends acrosszthe doorway. This bar is bolted to an angle-iron 29, havinghollow projections that embrace rod- 28, 'on which the iron 29 slides when it is actuated by the cord m, thereto attached, as shown. Said rod or bar 28 serves as asubstitute for .bars is Z, and, with only the weight of bar 30, the iron 29, arranged to slide on rod 28, is a substitute for sheaves j in supporting the said bar, as the opposite end of the bar moves freely in a guideway, and hence the entire Weight of the bar and its supporting-iron is sustained by a positive connection with said bar 28,- as the sheaves j are positively held in position by guide-bars is Z. By arranging studs 1217 in the floor of the cage .the operator is enabled to'readily actuate v them by the use of his feet, thereby leaving his hands free for the management of other parts.

I claim as my invention path of pendent end to counterpoise the door,'two' catch-blocks secured to said cord and provided with suitable catches, one of said blocks "being arranged to open and the other to close the door when actuated, two catch-bars arranged upon the cage with springs toforce them into contact with said catch-blocks, and cams duly positioned. to disengage said bars, all substantially as specified.

2. In an elevator, the combination, with the door, of the cord m, sheaves 'n, u, and s, the weight t, the catches o w, connected with said cord, the cams 00, y, z, and 2, duly arranged to coact with said catches, and the catch-bars 3 and 6, provided with the actuating-springs, all substantially as specified.

3. The combination, with the leaf D and the means for raising and lowering it, consist- .ing of cord m, the sheaves n u s, the weight and the weight h, substantially as specified.

4. In-- an e1evator-hatchwayoperating device, the catch-blocks formed with a recess or mortise, catch-piece 20, having a projection 21, and springs 23, arranged between said projection and the end wall of said mortise, to ,cushion' the force exerted upon said blocks,

substantially as specified.

5. In an elevator, the combination, with the jcage, the door, and'the catch-blocks and catch-bars, of studs 12 17, arranged in the floor of the cage, respectively connected with said bars, whereby either bar may at will be held inoperative, substantially as specified.

1 6. The combination, with studs 12 17, connected to actuate the catch-bars and formed NELSON BEOKWITH. Witnesses:

T. W. PORTER, R. W. E. HOPPER. 

